readline.line automatically escapes input

### Version 18.12.0 ### Platform Microsoft Windows NT 10.0.22621.0 x64 ### Subsystem readline ### What steps will reproduce the bug? Use readline and access its `line` variable. `rl.line` ### How often does it reproduce? Is there a required condition? _No response_ ### What is the expected behavior? _No response_ ### What do you see instead? I see that if I input `\n`, then it is automatically escaped with `\\n`, is it possible to disable this behavior and get `\n`? ### Additional information I am not sure if this behavior is something wanted. If so, then I am asking if there is an alternative to get the non-escaped character. (`\n`)